👉 Rhysoceratina is a group of marine bivalve mollusks that primarily inhabit the waters of the Pacific Ocean, with some species also found in the Atlantic and Indian Oceans. These creatures are characterized by their large, curved shells, which they use to protect themselves from predators. They have a unique adaptation known as the "spongy shell," which is composed of a series of overlapping layers of soft tissue that provide support and protection for the body.
